/ Dictionary / Index R rheumatoid: Meaning and Definition of Find definitions for: rheu•ma•toid Pronunciation: (r'mu-toid"), [key] — adj. resembling rheumatism. rheumatic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: rheumatoid (Thesaurus) rheumatism-root rheumatoid arthritis Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language